#include <bits/stdc++.h>
#define ll long long 
#define PI pair<int,int>
using namespace std;
int a[200005];
int f[2005][2005];
int main()
{
	/**/freopen("arena.in","r",stdin);
	freopen("arena.out","w",stdout);/**/
	ios::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);
	cout<<"0";
	return 0;
}
/**







/**/
